Finding the Fourth Proportional to 424,647.32, 585,822.83 and 286,781.46

Step by Step Solution

1. Step 1: Write the proportion equation
   424,647.32 : 585,822.83 = 286,781.46 : x
2. Step 2: Convert to fraction form
   424,647.32/585,822.83 = 286,781.46/x
3. Step 3: Cross multiply
   424,647.32x = 585,822.83 × 286,781.46
4. Step 4: Simplify right side
   424,647.32x = 168,003,123,933.42
5. Step 5: Solve for x
   x = 168,003,123,933.42/424,647.32
6. Step 6: Final answer
   x = 395,629.78